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1993 Scotts Mills Earthquake
The 1993 Scotts Mills earthquake, also known as the "Spring break quake", occurred in the U.S. state of Oregon on March 25 at 5:34 AM Pacific Standard Time. With a moment magnitude of 5.6 and a maximum perceived intensity of VII (''Very strong'') on the Mercalli intensity scale, it was the largest earthquake in the Pacific Northwest since the Elk Lake and Goat Rocks earthquakes of 1981. Ground motion was widely felt in Oregon's Willamette Valley, the Portland metropolitan area, and as far north as the Puget Sound area near Seattle, Washington. Earthquake The Scotts Mills mainshock epicenter was located about east of the town of Scotts Mills in Marion County, and about south of Portland. The United States Geological Survey reported that strong motion instruments recorded peak ground accelerations of 0.06 g at Detroit Dam, to the southeast, and also give an extensive review of damage reports and ground motion intensities. Reports of the earthquake came from as far as Rosebur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peak Ground Acceleration
Peak ground acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at a location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an wikt:accelerogram, accelerogram at a site during a particular earthquake. Earthquake shaking generally occurs in all three directions. Therefore, PGA is often split into the horizontal and vertical components. Horizontal PGAs are generally larger than those in the vertical direction but this is not always true, especially close to large earthquakes. PGA is an important parameter (also known as an intensity measure) for earthquake engineering, The design basis earthquake ground motion (DBEGM) is often defined in terms of PGA. Unlike the Richter magnitude scale, Richter and Moment magnitude scale, moment magnitude scales, it is not a measure of the total seismic scales#Magnitude and intensity, energy (magnitude, or size) of an earthquake, but rather of how hard the earth shake ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marion County, Oregon
Marion County is one of the 36 counties in the U.S. state of Oregon. The population was 345,920 at the 2020 census, making it the fifth-most populous county in Oregon. The county seat is Salem, which is also the state capital of Oregon. The county was originally named the Champooick District, after Champoeg (earlier Champooick), a meeting place on the Willamette River. On September 3, 1849, the territorial legislature renamed it in honor of Francis Marion, a Continental Army general from South Carolina who served in the American Revolutionary War. Marion County is part of the Salem, OR Metropolitan Statistical Area, which is also included in the Portland-Vancouver-Salem, OR- WA Combined Statistical Area. It is located in the Willamette Valley. History Marion County was created by the Provisional Legislature of Oregon on July 5, 1843, as the Champooick District, one of the original four districts of the Oregon Country along with Twality (later Washington), Clackamas, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In The United States
The following is a list of notable earthquakes and tsunamis which had their epicenter in areas that are now part of the United States with the latter affecting areas of the United States. Those in ''italics'' were not part of the United States when the event occurred. List of earthquakes Earthquake swarms which affected the United States: * 1962–71 Denver earthquake swarm * Enola earthquake swarm * 2008 Reno earthquakes * Guy-Greenbrier earthquake swarm * Oklahoma earthquake swarms (2009–present) Earthquakes which affected the United States but whose epicenters were outside the United States borders: * 1925 Charlevoix–Kamouraska earthquake – magnitude 6.2 earthquake, no injuries or fatalities anywhere * 1979 Imperial Valley earthquake – magnitude 6.4 earthquake with an epicenter less than 1 km inside Mexico – significant damage and injuries on both sides of the border (60 in the US) * 2010 Baja California earthquake (Mexico near S California) – magnitude 7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Earthquakes In 1993 ...
This is a list of earthquakes in 1993. Only earthquakes of magnitude 6 or above are included, unless they result in damage or casualties, or are notable for some other reason. All dates are listed according to UTC time. By death toll By magnitude By month January February March April May June July August September October November December References {{Earthquakes by year 1993 1993 1993 File:1993 Events Collage.png, From left, clockwise: The Oslo I Accord is signed in an attempt to resolve the Israeli–Palestinian conflict; The Russian White House is shelled during the 1993 Russian constitutional crisis; Czechoslovakia is peace ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1872 North Cascades Earthquake
The 1872 North Cascades earthquake occurred at in central Washington Territory (now Washington state). A maximum Mercalli intensity of VIII (''Severe'') was assessed for several locations, though less intense shaking was observed at many other locations in Washington, Oregon, and British Columbia. Some of these intermediate outlying areas reported V (''Moderate'') to VII (''Very strong'') shaking, but intensities as high as IV (''Light'') were reported as far distant as Idaho and Montana. Due to the remote location of the mainshock and a series of strong aftershocks, damage to structures was limited to a few cabins close to the areas of the highest intensity. Because the earthquake occurred before seismometers were operating in the region, the magnitude of the shock and its location were never precisely determined, but the intensity reports that are available for the event were studied, and various epicenters for the event were proposed based on these limited data. One study pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Seattle Times
''The Seattle Times'' is a daily newspaper serving Seattle, Washington, United States. It was founded in 1891 and has been owned by the Blethen family since 1896. ''The Seattle Times'' has the largest circulation of any newspaper in Washington (state), Washington state and the Pacific Northwest region. The Seattle Times Company, which is owned by the Blethen family, holds 50.5% of the paper. McClatchy company owns 49.5% of the paper. ''The Seattle Times'' had a longstanding rivalry with the ''Seattle Post-Intelligencer'' newspaper until the latter ceased publication in 2009. Copies are sold at $2 daily in King & adjacent counties (except Island, Thurston & other WA counties, $2.5) or $3 Sundays/Thanksgiving Day (except Island, Thurston & other WA counties, $4). Prices are higher outside Washington state. History ''The Seattle Times'' originated as the ''Seattle Press-Times'', a four-page newspaper founded in 1891 with a daily Newspaper circulation, circulation of 3,500, which M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salem Hospital (Oregon)
Salem Hospital is a non-profit, regional medical center located in Salem, Oregon, United States. Founded in 1896, the hospital has 454 beds. A Level II trauma center, the community hospital is the largest private employer in Salem and the only hospital in the city. Salem Hospital is one of five Magnet designated hospitals in Oregon. History In 1896, Salem General Hospital was incorporated at the Glen Oak Orphanage.Early Hospitals. 1840-1990 Keepsake Edition, p. 31. ''Statesman Journal'', October 26, 1990. Situated on of land donated to the orphanage by the Oregon Children's Aid Society, the hospital opened a school of nursing with the first class graduating in 1899. The original building for Salem General burned in 1920, with a new building completed the following year. Salem General expanded in 1926 and 1953. In 1916, Frank B. Wedel and his wife started the Deaconess Home and Hospital in a former hotel on Winter Street. Started with four nurses, the hospital grew and was expan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salem, Oregon
Salem ( ) is the capital of the U.S. state of Oregon, and the county seat of Marion County, Oregon, Marion County. It is located in the center of the Willamette Valley alongside the Willamette River, which runs north through the city. The river forms the boundary between Marion and Polk County, Oregon, Polk counties, and the city neighborhood of West Salem, Salem, Oregon, West Salem is in Polk County. Salem was founded in 1842, became the capital of the Oregon Territory in 1851, and was incorporated in 1857. Salem had a population of 174,365 in 2019, making it the third-largest city in the state after Portland, Oregon, Portland and Eugene, Oregon, Eugene. Salem is the principal city of the Salem Metropolitan Statistical Area, a United States metropolitan area, metropolitan area that covers Marion and Polk counties and had a combined population of 390,738 at the 2010 census. A 2019 estimate placed the metropolitan population at 400,408, the state's second largest. This area is, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oregon State Capitol
The Oregon State Capitol is the building housing the state legislature and the offices of the governor, secretary of state, and treasurer of the U.S. state of Oregon. It is located in the state capitol, Salem. Constructed from 1936 to 1938 and expanded in 1977, the current building is the third to house the Oregon state government in Salem. The first two capitols in Salem were destroyed by fire, one in 1855 and the other in 1935. New York architects Trowbridge & Livingston conceived the current structure's Art Deco stripped classical design in association with Francis Keally. Much of the interior and exterior is made of marble. The Oregon State Capitol was placed on the National Register of Historic Places on June 29, 1988. The federal government's Public Works Administration partially financed construction which was completed during the Great Depression in 1938. The building was erected at a cost of $2.5 million for the central portion of the building, which includes a d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molalla High School
Molalla High School is a public high school in Molalla, Oregon, United States. It is one of two high schools in the Molalla River School District. History Molalla's first school opened in 1856, and the first high-school course began in 1906. Molalla High School graduated its first class in 1911. The Molalla Union High School building was dedicated in February 1926, and served as the sophomore, junior and senior campus until the 5.6 Richter Scotts Mills earthquake on March 25, 1993, rendered the building unsafe for students. The current high school, which previously served as a freshman campus, has since been renovated to incorporate all four years of high school. Following the Oregon Board of Education's 2012 ban of Native American school mascots (effective July 1, 2017), the Molalla River School District received approval from the Confederated Tribes of Grand Ronde to continue use of the Indians mascot. Under the terms of their 2017 agreement, the school's logo was changed to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Masonry
Masonry is the building of structures from individual units, which are often laid in and bound together by mortar; the term ''masonry'' can also refer to the units themselves. The common materials of masonry construction are bricks, building stone such as marble, granite, and limestone, cast stone, concrete blocks, glass blocks, and adobe. Masonry is generally a highly durable form of construction. However, the materials used, the quality of the mortar and workmanship, and the pattern in which the units are assembled can substantially affect the durability of the overall masonry construction. A person who constructs masonry is called a mason or bricklayer. These are both classified as construction trades. Applications Masonry is commonly used for walls and buildings. Brick and concrete block are the most common types of masonry in use in industrialized nations and may be either load-bearing or non-load-bearing. Concrete blocks, especially those with hollow cores, offer va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Washington
The University of Washington (UW, simply Washington, or informally U-Dub) is a public research university in Seattle, Washington. Founded in 1861, Washington is one of the oldest universities on the West Coast; it was established in Seattle approximately a decade after the city's founding. The university has a 703 acre main campus located in the city's University District, as well as campuses in Tacoma and Bothell. Overall, UW encompasses over 500 buildings and over 20 million gross square footage of space, including one of the largest library systems in the world with more than 26 university libraries, art centers, museums, laboratories, lecture halls, and stadiums. The university offers degrees through 140 departments, and functions on a quarter system. Washington is the flagship institution of the six public universities in Washington state. It is known for its medical, engineering, and scientific research. Washington is a member of the Association of American Universiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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